Chapt_32

# Chapt_32 - University Physics(Prof David Flory Chapt_32...

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University Physics (Prof. David Flory) Chapt_32 Monday, August 06, 2007 Name: __________________________ Date: _____________ ___ 1. The diagram shows an inductor that is part of a circuit. The direction of the emf induced in the inductor is indicated. Which of the following is possible? A) The current is constant and rightward B) The current is constant and leftward C) The current is increasing and rightward D) The current is increasing and leftward E) None of the above ___ 2. An electron traveling with speed v around a circle of radius r is equivalent to a current of: A) evr /2 B) ev / r C) ev /2 π r D) 2 er / v E) 2 ev / r ___ 3. An inductor with inductance L and an inductor with inductance 2 L are connected in parallel. When the rate of change of the current in the larger inductor is 1200 A/s the rate of change of the current in the smaller inductor is: A) 400 A/s B) 1200 A/s C) 1600 A/s D) 2000 A/s E) 2400 A/s ___ 4. A 3.5-mH inductor and a 4.5-mH inductor are connected in series. The equivalent inductance is: A) 2.0 mH B) 0.51 mH C) 0.13 mH D) 1.0 mH E) 8.0 mH ___ 5. The diagram shows two small paramagnetic spheres, one near each end of a bar magnet. Which of the following statements is true? A) The force on 1 is toward the magnet and the force on 2 is away from the magnet B) The force on 1 is away from the magnet and the force on 2 is away from the magnet C) The forces on 1 and 2 are both toward the magnet D) The forces on 1 and 2 are both away from the magnet E) The magnet does not exert a force on either sphere Write the letter for the correct answer on the answer sheet. Write clearly. Page 1

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University Physics (Prof. David Flory) Chapt_32 Monday, August 06, 2007 ___ 6. A magnetic field ext B G is applied to a diamagnetic substance. In the interior the magnetic field produced by the magnetic dipoles of the substance is: A) greater in magnitude than
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## This note was uploaded on 11/20/2011 for the course PHYSICS 2 taught by Professor Davidflory during the Spring '11 term at WPUNJ.

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Chapt_32 - University Physics(Prof David Flory Chapt_32...

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